An ailing Poirot returns to Styles with Hastings nearly three decades after solving their first mystery there in order to prevent a serial killer from claiming more victims.

Poirot's pursuit of an infamous art thief leads him to a snowbound hotel in the Swiss Alps, where he is met with a plethora of mysteries and the reappearance of a familiar face from the past.

Mrs. Oliver is asked to devise a murder hunt for a Devon fête, but her sense of foreboding summons Poirot to the scene. Her fears are realized when the girl playing murder victim winds up truly murdered.

As the threat of world war looms large, Poirot seeks the help of friends both old and new when he is pitted against a dangerous group of dissidents responsible for a series of violent murders.

Ariadne Oliver becomes an amateur sleuth when her goddaughter tasks her to find out the truth behind her parents' mysterious deaths.

Four clocks surround an unidentified corpse in a blind woman's house, and a young typist is summoned to the crime scene. However, Poirot is convinced that the complicated setup is merely hiding a simpler solution.

Poirot investigates the murder of a shady American businessman stabbed in his compartment on the Orient Express when it is blocked by a blizzard in Croatia.

During a village's Hallowe'en party, a young girl boasts of having witnessed a murder from years before. No one believes her tale until her body is found later on in the evening, drowned in the apple-bobbing bucket.

When a vicar chokes to death on a cocktail while attending a party held by actor Sir Charles Cartwright, Poirot initially dismisses the idea of murder but reconsiders when another guest dies in the same manner.

Syria 1937. While accompanying her husband on an archaeological dig, the abusive and overbearing Lady Boynton is found stabbed to death.

After a seemingly neurotic young heiress tells Ariadne Oliver and Poirot that she thinks she may have killed someone, her ex-nanny is found with her wrists slashed.

A foreign revolution, a kidnapped princess, and a trove of priceless rubies are linked to a prestigious girls' school, where staff members are brutally murdered.

A pair of photographs are the only clues that Poirot has to solve the murder of a village charwoman, and to prove the innocence of the victim's lodger.

A young widow is left in sole possession of her late husband's fortune, and her brother refuses to share it with her in-laws - so they enlist Poirot to try to prove that the widow's missing first husband might not be dead after all.

When a man disinherits his sole beneficiary and bequeaths his wealth to others just prior to his death, Poirot is called in to investigate.

The enigmatic, sinister Mr. Shaitana, one of London's richest men, invites 8 guests, 4 of them possible murderers and 4 'detectives' to his opulent apartment.

Poirot investigates the brutal murder of an American heiress and the theft of a fabulous ruby on the Blue Train between Calais and Nice.

Poirot stumbles on the murder scene of philandering Dr Christow in a country house as his wife standing next to him with a revolver in her hand.

A wealthy British heiress honeymooning on a Nile cruise ship is stalked by a former friend, whose boyfriend she had stolen before making him her new husband.

Elinor Carlisle seems to be the obvious murderer of her ailing aunt and the beautiful romantic rival who broke up her engagement, but Poirot uncovers darker motives.

Lucy Crale enlists Poirot to investigate the 14-year-old murder in which her mother was hanged for poisoning her artist father.

While Poirot is on holiday in Iraq, the wife of the head scientist at an archaeological dig confides to him that she is the target of threatening letters.

Poirot's rehabilitative health retreat on an island resort becomes an even more stimulating mental exercise when a flirtatious film star is found strangled on a nearby beach.

A beautiful actress becomes the prime suspect in the murder of her tyrannical husband - except that she has a cast-iron alibi for the night of the crime.

Poirot comes out of retirement when his industrialist friend is brutally murdered a short while after a local widow who was suspected of killing her husband commits suicide.

An elderly woman confides to Poirot that she fears one of her relatives is trying to kill her for her money. He persuades her to disinherit her heirs, but she is murdered anyway.

While Poirot and Hastings are holidaying in France, a businessman tells Poirot that his life is in danger. The next day he is found stabbed to death on a nearby golf course.

Miss Lemon persuades Poirot to investigate a series of apparently minor thefts in a university hostel, but simple kleptomania soon turns to baffling homicide.

The tyrannical patriarch of a dysfunctional but wealthy family summons his adult children for a Christmas reunion, but prior to the holiday his throat is slashed apparently by one of them.

While Poirot vacations in Brighton to boost his health, the beautiful pearl necklace of a theatre actress staying at his hotel is mysteriously stolen.

An obnoxious man who outbid Poirot at an auction for an antique mirror is murdered after seeking Poirot's assistance to look into the dealings of his business associate.

While in Belgium, Poirot relates to Chief Inspector Japp a case from his early days in the Belgian police force that nearly eluded the brilliance of his 'little grey cells.'

Poirot investigates the murder of an Italian count who was also the employer of Miss Lemon's new boyfriend. He soon learns that the victim was being targeted by a blackmailer.

A terminally ill man asks Poirot to be executor of his new will but is murdered before he can write it, and it is later discovered the old will has been stolen.

A man celebrates the two-year anniversary of his wife's sudden death by cyanide while in Argentina - a death which Poirot himself had witnessed, but could not solve at the time.

Poirot investigates when the cruel CEO of a chemical company is bludgeoned to death in his home after the company's formula for a revolutionary new synthetic rubber is targeted by a thief.

Shortly after opening an ancient Egyptian tomb, members of an English-American museum expedition start dropping off like flies. Can it truly be the Pharaoh's curse? Poirot travels to Egypt to unravel the mystery.